Jamieson, Fausset and Brown on Daniel 2:45

45. without hands--(See on Da 2:35). The connection of the "forasmuch," &c. is, "as thou sawest that the stone," &c., this is an indication that "the great God," &c., that is, the fact of thy seeing the dreams as I have recalled it to thy recollection, is a proof that it is no airy phantom, but a real representation to these from God of the future. A similar proof of the "certainty" of the event was given to Pharaoh by the doubling of his dream (Ge 41:32).